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82 lines
2.6 KiB
Groff
82 lines
2.6 KiB
Groff
.\" -*- nroff -*-
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.\"
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.\" Copyright (c) 2002 Hiten Pandya
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.\" Copyright (c) 2002 Robert N. M. Watson
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.\"
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd July 5, 2022
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.Dt DEVINFO 8
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.Os
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.Sh NAME
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.Nm devinfo
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.Nd print information about system device configuration
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.Sh SYNOPSIS
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.Nm
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.Op Fl rv
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.Nm
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.Fl u
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.Nm
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.Fl p Ar dev Op Fl v
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.Sh DESCRIPTION
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The
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.Nm
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utility, without any arguments, shows the hierarchy of devices available
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in the system, starting from the
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.Dq nexus
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device.
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.Pp
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The following options are accepted.
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.Bl -tag -width indent
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.It Fl r
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Causes hardware resource information (such as IRQ, I/O ports, I/O memory
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addresses) to be also listed, under each device that has reserved those resources.
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.It Fl u
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Displays the same information as with
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.Fl r
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but sorts by resource type rather than by device, allowing to review the
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set of system resources by usage and available resources.
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I.e., it lists all
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the IRQ consumers together.
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.It Fl v
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Display all devices in the driver tree, not just those that are attached or
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busy.
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Without this flag, only those devices that have attached are reported.
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This flag also displays verbose information about each device.
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.It Fl p Ar dev
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Display the path of
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.Ar dev
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back to the root of the device tree.
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.El
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.Sh SEE ALSO
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.Xr systat 1 ,
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.Xr devinfo 3 ,
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.Xr devctl 8 ,
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.Xr iostat 8 ,
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.Xr pciconf 8 ,
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.Xr vmstat 8 ,
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.Xr devclass 9 ,
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.Xr device 9
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.Sh AUTHORS
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.An Mike Smith Aq Mt msmith@FreeBSD.org
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